| 摘要 |
PURPOSE:To improve the yield of an active material and simplify the preparation process for the active material to be filled by using nickel hydroxide which is obtained by adding sodium hydroxide to a nickel sulfate solution containing nickel powder and cobalt powder as the active material. CONSTITUTION:Nickel powder obtained from carbonyl nickel and cobalt powder are suspended in a nickel sulfate aqueous solution, and a sodium hydroxide aqueous solution is added to the suspension to form nickel hydroxide. Then particles are grown, and washed and dried repeatedly. Thus a mixture comprising nickel hydroxide, nickel powder, and cobalt powder is obtained. A carboxymethylcellulose aqueous solution is added to the mixture to form a paste, the paste is applied to a porous nickel sponge, the sponge is soaked in a fluororesin suspension, dried, and compressed to form a nickel electrode. Thus the yield of an active material is improved and preparation process of an active material compound is simplified. |
